How to add a transition in onEntry in Qtstatemachine

[d_stranz]

Yes, of course. But I think for debugging purposes it is clearer to understand what is happening if you have a handler for the slot where you can set a breakpoint and back trace how it got there. With the state machine I developed, it was complex enough that I often needed debug statements to be able to follow the state transitions, so I developed that convention I posted.

[anda_skoa]

Yes, of course. But I think for debugging purposes it is clearer to understand what is happening if you have a handler for the slot where you can set a breakpoint and back trace how it got there.

Good point.

I usually even have the signal object separate from the object containing the state machine, so that these "internal" signals are not part of the "external" API.

Cheers,
_

[d_stranz]

I usually even have the signal object separate from the object containing the state machine

I'm not entirely sure I understand what you mean by this. I think what you are saying is that instead of having the class that holds the QStateMachine instance be the one that generates the state transition signals, you would implement another class to implement the signal methods. This class would have a private implementation. Would you make this class a friend of your "public" class so it could emit the signals or would you implement the state machine entirely within the private class?

I guess I'm trying to understand how it would work in practice.

[anda_skoa]

Taking your example, MyStateMachine would have another member of one (or more) classes that serve as signal sources for transitions, if I would like to add logging/break points as you suggested earlier or if the actual trigger needs to be a method call else where.

One example for the latter would be that you need to expose an object with callable methods to QML so that you can trigger statemachine transitions from there, but only want to expose a subset of such triggers.
Also applies to only exposing certain transition trigger functions/slots to certain widgets.

Cheers,
_